You need the following to use the ID-card and digi-ID electronic services:

PINs – issued with an ID-card. In the event that you have lost the codes, you will be able receive new codes from a service office of the Citizenship and Migration Bureau of the Police and Border Guard Board or a bank branch that offers ID-card follow-up services

valid certificates – More details on whether you certificates are valid or need updating, as well as how to update the certificates, can be found here.

a computer with an internet connection

a card reader – ask for one from a computer store or your local bank branch